<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        function doChange(obj){
            // selectDOM对象.value可以获取被选中项的值
            console.log(obj.value);
        }
    </script>
</head>
<body>
    <select onchange="doChange(this)" >
        <option value="0">顾新宇</option>
        <option value="1">熊振宇</option>
    </select>
</body>
</html>